Sheridan Clark is an expert in antiquities relating to music, and the former conductor of the Vatican choir who has now fallen on hard times. He is recruited by a shady U.N. operative, to retrieve the Baton of Shambhala, an ancient artifact said to be used by the Archangel Lucifer to direct the chorus of heaven before his fall from grace. They journey to the Himalayas, where Sheridan is led to the lost city of Shambhala. There, Sheridan retrieves the Baton from the top of the King's Tower and receives a spirit message from an ageless sage who reveals Sheridan's true quest: Sheridan must find the three sacred Chintamani Stones that form the base of the baton. If he does this, the Song of Shambhala will be revealed. But he has only until the time of Final Morning to complete the task, or the world will be plunged into darkness. What follows is a world-trekking adventure - cast on the backdrop of iconic sacred sites - that tells the tale of an inspirational fable woven into the fabric of history and legend.
In the epic conclusion to the Devil's Deal series, Freya has one final chance to discover the full potential of her own power, and to use it to restore balance in the universe - once and for all. After the destruction caused by Roisin, Ferya and Torix come to terms with their losses and mistakes... And prepare for a final battle that will change everything.